Caption: Magnifying mirror. Animation of a mirror showing its curvature varying with increasing concavity within the limits that produce magnified images (beyond this limit, the image reverses and gets smaller). As the mirror becomes increasingly flat, the magnification drops. When it is completely flat then the image is the same size as the object itself. This capacity to magnify objects makes these concave spherical mirrors useful for detailed tasks such as shaving or applying make-up.